Copypasted from Twitter post:

"Funny enough, I actually have had an idea for a bizzarro-Vivi ever since April Fools' two years ago. She'd be a heroic pilot who builds her own aircrafts in contrast to Vivi's preference of computer science and biology.

And to be honest, I kinda like the idea/design just as much as regular Vivi. Maybe I'll make them twins or something, idk."